Shedding light on dark DNA Most textbook definitions of evolution state that it occurs in two stages: mutation followed by natural selection. DNA mutation is a common and continuous process, and occurs completely at random.
The average adult only eats 15 grams of fiber per day. Women need 25 grams of fiber per day, and men need 38 grams per day, according to the Institute of Medicine.
The USDA recommended minimum fiber intake for adults is 25 to 35 grams daily, and soluble fiber should account for one third to one half of this total amount. Some scientists actually recommend up to 60 grams of fiber a day, so the USDA recommendations are not maximum dosage limitations.or all soluble fiber supplements, make sure you have a large glass of water with each dose, and drink fresh water frequently throughout the day as well. Soluble fiber needs plenty water to work-this is essential.